Maths-
General
Easy

Question

By completing scatter plots for each of the following data sets, describe the correlation between x and y as positive, negative or none.

hintHint:

A scatter plot has a positive correlation, if the trend line has a positive slope. This means the trend line will be upwards. On the other hand, if the slope of the line is negative, the correlation is also negative.
We are asked to graph the scatter plot and find whether the correlation is positive, negative or none.

The correct answer is: We are asked to graph the scatter plot and find whether the correlation is positive, negative or none.


    ANSWER:
    Step 1 of 2:
    The coordinate points corresponding to the given table is:
    (4,115),(3,105),(1,105),(7,135),(8,145),(10,145),(6,125),(9,140),(5,120),(5,130)
    The scatter plot based on the given set of points is:

    Step 2 of 2:
    The trend based on the scatter plot is:

    Here, the trend line is drawn upwards. That means, the line has a positive slope. This indicates, the correlation among x and y are positive.
     

    A trend line or a regression line used to describe the pattern or behavior of a scatter plot.

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